Stone



FIG. 1 is a front view of the invention;

FIG. 2 is a rear view of the invention;

FIG. 3 is a left side view of the invention;

FIG. 4 is a right side view of the invention;

FIG. 5 is a top view of the invention;

FIG. 6 is a bottom view of the invention; and,

FIG. 7 is a perspective view of the invention.

The ornamental design for an ornamental stone, as shown and described.